MESON Chess Problem Database

Problem Display
PID: 179780 (2B5/5pK1/R4Np1/3rk3/3Nr1P1/8/1Q6/5R2 w - - 0 1)

Ruszczynski, Piotr

Probleemblad, 1979

2B5/5pK1/R4Np1/3rk3/3Nr1P1/8/1Q6/5R2

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Sf3#
    • 1...Rd6
      • 2.Sc6#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Kxf7?
      • threat
        • 2.Re6#
      • 1...Rd6
        • 2.Sc6#
      • 1...Rd7+!
    • 1.Sf5+?
      • 1...Rdd4
        • 2.Ra5#
      • 1...Red4!
    • 1.Se6+?
      • 1...Red4
        • 2.Re1#
      • 1...Rdd4!
    • 1.Qc1?
      • threat
        • 2.Sf3#
      • 1...Rexd4
        • 2.Qg5#
      • 1...Rdxd4
        • 2.Qg5#
      • 1...Re3
        • 2.Qxe3#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Kxd4!
    • 1.Qh2+?
      • 1...Rf4
        • 2.Sf3#
        • 2.Qxf4#
      • 1...Kxd4!
    • 1.Qb4?
      • threat
        • 2.Sc6#
      • 1...Rexd4
        • 2.Qe7#
      • 1...Rdxd4
        • 2.Qe7#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Rd7!
    • 1.Qb7?
      • threat
        • 2.Qxd5#
      • 1...Rexd4
        • 2.Qe7#
      • 1...Rdxd4
        • 2.Qe7#
      • 1...Ra5
        • 2.Qxe4#
      • 1...Rb5
        • 2.Qxe4#
      • 1...Rc5
        • 2.Qxe4#
      • 1...Rd6
        • 2.Qxe4#
      • 1...Rd7
        • 2.Qxe4#
      • 1...Rd8
        • 2.Qxe4#
      • 1...Kxd4!
    • 1.Qb8+?
      • 1...Rd6
        • 2.Sc6#
        • 2.Qxd6#
      • 1...Kxd4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sf3#
      • 1...Rexd4
        • 2.Qg5#
      • 1...Rdxd4
        • 2.Qg5#
      • 1...Re3
        • 2.Qxe3#
      • 1...Rf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);SBLOCK::QAB(B)+S(C),DCHECK
    • R(b);SBLOCK::QAB(B)+S(C),DCHECK
    • P(d);N_GUARD::R1(A)
  • Tries
    • Try
      • K(G);P-FLIGHT,XP(e)
      • Threat
        • R1(E)
      • Vars
        • R(b);SBLOCK::QAB(B)+S(C),DCHECK
      • Refutation
        • R(b);CHECK
    • Try
      • S(C);CHECK
      • Vars
        • R(b);P_SPINR(b),S_CUTR(a)::R(E)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • S(C);CHECK
      • Vars
        • R(a);P_SPINR(a),S_CUTR(b)::R(A)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • Q(B);
      • Threat
        • S(C)
      • Vars
        • R(a);SBLOCK,XS(C)::QAR2(B)
        • R(b);SBLOCK,XS(C)::QAR2(B)
        • R(a);OGATEB::QAR2(B),XR(a)
        • R(a);N_GUARD::QAB1(B),XR(a)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • Q(B);
      • Threat
        • S(C)
      • Vars
        • R(a);SBLOCK,XS(C)::QAR2(B)
        • R(b);SBLOCK,XS(C)::QAR2(B)
        • R(b);OGATEB::QAR2(B),XR(b)
        • R(b);N_GUARD::QAB1(B),XR(b)
      • Refutation
        • R(b);
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XR(b)
      • Vars
        • R(a);SBLOCK,XS(C)::QAR2(B)
        • R(b);SBLOCK,XS(C)::QAR2(B)
        • R(b);OGATE::QAR1(B),XR(a)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT,XS(C)
  • Actual
    • Q(B);
    • Threat
      • S(C)
    • Vars
      • R(a);SBLOCK,XS(C)::QAR2(B)
      • R(b);SBLOCK,XS(C)::QAR2(B)
      • R(a);OGATEB::QAR2(B),XR(a)
      • R(a);N_GUARD::QAB1(B),XR(a)
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